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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getFirstAndLastTokens = getFirstAndLastTokens;
exports.isBeginningOfLine = isBeginningOfLine;
exports.isBeginningOfElement = isBeginningOfElement;
const eslint_utils_1 = require("@eslint-community/eslint-utils");
const ast_1 = require("./ast");
/**
* Get the first and last tokens of the given node.
* If the node is parenthesized, this gets the outermost parentheses.
* If the node have whitespace at the start and the end, they will be skipped.
*/
function getFirstAndLastTokens(sourceCode, node, borderOffset = 0) {
let firstToken = sourceCode.getFirstToken(node);
let lastToken = sourceCode.getLastToken(node);
// Get the outermost left parenthesis if it's parenthesized.
let left, right;
while ((left = sourceCode.getTokenBefore(firstToken)) != null &&
(right = sourceCode.getTokenAfter(lastToken)) != null &&
(0, eslint_utils_1.isOpeningParenToken)(left) &&
(0, eslint_utils_1.isClosingParenToken)(right) &&
borderOffset <= left.range[0]) {
firstToken = left;
lastToken = right;
}
while ((0, ast_1.isWhitespace)(firstToken) && firstToken.range[0] < lastToken.range[0]) {
firstToken = sourceCode.getTokenAfter(firstToken);
}
while ((0, ast_1.isWhitespace)(lastToken) && firstToken.range[0] < lastToken.range[0]) {
lastToken = sourceCode.getTokenBefore(lastToken);
}
return { firstToken, lastToken };
}
/**
* Check whether the given node or token is the beginning of a line.
*/
function isBeginningOfLine(sourceCode, node) {
const prevToken = sourceCode.getTokenBefore(node, {
includeComments: false,
filter: ast_1.isNotWhitespace
});
return !prevToken || prevToken.loc.end.line < node.loc.start.line;
}
/**
* Check whether the given node is the beginning of element.
*/
function isBeginningOfElement(node) {
if (node.parent.type === 'SvelteElement' ||
node.parent.type === 'SvelteAwaitCatchBlock' ||
node.parent.type === 'SvelteAwaitPendingBlock' ||
node.parent.type === 'SvelteAwaitThenBlock' ||
node.parent.type === 'SvelteEachBlock' ||
node.parent.type === 'SvelteElseBlock' ||
node.parent.type === 'SvelteIfBlock' ||
node.parent.type === 'SvelteKeyBlock' ||
node.parent.type === 'SvelteSnippetBlock' ||
node.parent.type === 'SvelteStyleElement') {
return node.parent.children[0] === node;
}
if (node.parent.type === 'Program') {
return node.parent.body[0] === node;
}
return assertNever(node.parent);
}
/**
* Throws an error when invoked.
*/
function assertNever(value) {
throw new Error(`This part of the code should never be reached but ${value} made it through.`);
}
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